Open AccessModeling and Control of Twin Parallel-Axis Linear Servo Mechanisms for High-Speed Machine Tools
Author(s) -
Yao Ting Wu,
Fangwei Yang,
MingChe Tsai
Publication year - 2011
Publication title -
international journal of automation and smart technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.148
H-Index - 10
ISSN - 2223-9766
DOI - 10.5875/ausmt.v1i1.72
Subject(s) - control theory (sociology) , servo , servomotor , synchronization (alternating current) , computer science , linear motor , controller (irrigation) , control engineering , servomechanism , position (finance) , servo control , mechanism (biology) , engineering , control (management) , artificial intelligence , mechanical engineering , computer network , agronomy , channel (broadcasting) , finance , economics , biology , philosophy , epistemology
This paper presents a synchronous control scheme for a twin parallel-axis linear servo mechanism with mechanical coupling which appears inherently in the so-called box-in-box configuration of machine tools. To identify the two-port mathematical model, a multi-variable identification method is developed to construct a dynamic model of the controlled servo mechanism. Moreover, a synchronous controller framework based on the identified model is proposed to reduce position and velocity errors of the two coupled linear servomotors. To demonstrate the capacity of the mathematical model as well as the effectiveness of the control scheme, a gantry-type platform was utilized as an illustrated example, where the steady-state synchronization error reaches 0.5 m with a velocity of 830mm/s